help requierd from forum friends to design switching power supply.

Discussion in 'The Projects Forum' started by sanjaydesai, Feb 2, 2010.

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  1. sanjaydesai

    Thread Starter New Member

    Jan 29, 2010
    Dear forum friends,

    I m willing to make one 230v direct input (with out step down transformer) , 0v to 50v dc or 3v to 50v dc adjustable output power supply with max 3A current rating using smps ICs like uc 3843 or TL 494 and power MOS FETS.

    can any forum member please help me in providing schematic ? or guide me to any link with schematics?

    pls note i m not willing to use step down transformer, so LM 317 and other similar regulators based circuit may not help me.

    All forum friends are requested to assist.
    Thank you.
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    By rejecting any step down transformer, you can't even make a switched mode supply. There hardly seems to be any point to this thread.
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